From 463311b94974aaea2816554b52661b5b46abda53 Mon Sep 17 00:00:00 2001
From: Tom Hicks <headhunter3@gmail.com>
Date: Sat, 12 Jun 2021 22:16:16 -0700
Subject: [PATCH] Adds ability to remove a skill.

---
 .../ui/editmonster/EditMonsterViewModel.java      |  6 ++++++
 .../ui/editmonster/EditSkillsFragment.java        |  5 +++++
 .../EditSkillsRecyclerViewAdapter.java            | 15 ++++++++++++++-
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditMonsterViewModel.java b/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditMonsterViewModel.java
index 8f7540b..8493b70 100644
--- a/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditMonsterViewModel.java
+++ b/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditMonsterViewModel.java
@@ -903,6 +903,12 @@ public class EditMonsterViewModel extends ViewModel {
         newSkills.add(newSkill);
         Collections.sort(newSkills, (skill1, skill2) -> skill1.name.compareToIgnoreCase(skill2.name));
         mSkills.setValue(newSkills);
+    }
+
+    public void removeSkill(int position) {
+        List<Skill> skills = mSkills.getValue();
+        ArrayList<Skill> newSkills = new ArrayList<>(skills);
+        newSkills.remove(position);
         mSkills.setValue(newSkills);
     }
 }
diff --git a/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsFragment.java b/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsFragment.java
index 797bde8..9d01145 100644
--- a/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsFragment.java
+++ b/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsFragment.java
@@ -13,11 +13,13 @@ import androidx.navigation.NavBackStackEntry;
 import androidx.navigation.NavController;
 import androidx.navigation.Navigation;
 import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import com.majinnaibu.monstercards.R;
+import com.majinnaibu.monstercards.ui.shared.SwipeToDeleteCallback;
 
 /**
  * A fragment representing a list of Items.
@@ -54,6 +56,9 @@ public class EditSkillsFragment extends Fragment {
 
         DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(context, layoutManager.getOrientation());
         recyclerView.addItemDecoration(dividerItemDecoration);
+
+        ItemTouchHelper itemTouchHelper = new ItemTouchHelper(new SwipeToDeleteCallback(context, mViewModel::removeSkill));
+        itemTouchHelper.attachToRecyclerView(recyclerView);
     }
 
     private void setupAddSkillButton(@NonNull FloatingActionButton fab) {
diff --git a/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsRecyclerViewAdapter.java b/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsRecyclerViewAdapter.java
index 32f891b..5f6773d 100644
--- a/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsRecyclerViewAdapter.java
+++ b/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditSkillsRecyclerViewAdapter.java
@@ -16,9 +16,11 @@ import java.util.List;
  */
 public class EditSkillsRecyclerViewAdapter extends RecyclerView.Adapter<EditSkillsRecyclerViewAdapter.ViewHolder> {
     private final List<Skill> mValues;
+    private final ItemCallback mOnDelete;
 
-    public EditSkillsRecyclerViewAdapter(List<Skill> items) {
+    public EditSkillsRecyclerViewAdapter(List<Skill> items, ItemCallback onDelete) {
         mValues = items;
+        mOnDelete = onDelete;
     }
 
     @Override
@@ -37,6 +39,17 @@ public class EditSkillsRecyclerViewAdapter extends RecyclerView.Adapter<EditSkil
         return mValues.size();
     }
 
+    public void removeItem(int position) {
+        if (mOnDelete != null) {
+            Skill skill = mValues.get(position);
+            mOnDelete.onItemCallback(skill);
+        }
+    }
+
+    public interface ItemCallback {
+        void onItemCallback(Skill skill);
+    }
+
     public class ViewHolder extends RecyclerView.ViewHolder {
         public final TextView mContentView;
         public Skill mItem;